Circumferentially traveling tire bead prying tool



Sept. 16, 1952 J.' M. EDWARDS 2,610,672

CIRCUMFERENTIALLY TRVEL'ING TIRE BEAD PRYINGTOOL Filed Sept. 2, 1949 Z5 Zz /0 I Z5 /z James Miwdrz [Q )1, W

Patented Sept. 16, 1952 CIRCUMFERENTIALLY TRAVELING TIRE` BEAD PRYING TOOL James M. Edwards, Wink, Tex., assigner of onethird to Beaumont B. Wright, Wink, Tex.

Application September 2, 1949, Serial No. 113,775`

This invention relates to a tool for removing a tire from a rim where the tire has become frozen or stuck to the rim by rust or corrosion.

More particularly, it is a primary object of the present invention to provide a tool which is capable of being very readily operated for effectively separating a tire from a rim without damage to the tire, inner tube or rim and wherein rust and other foreign matter will be cut from the rim as the separation is accomplished for reducing the effort required to detach the tire from the rim.

Still a further object of the invention is to provide a tool having means for guiding it in its movement along the outer surface of the rimand along one edge thereof to insure vthat the tool will be maintained in a proper position with respect to the tire or rim while it is moved circumferentially around the rim by a series of im pact strokes.

Various other objects and advantages of the in-y vention Will hereinafter becomemore fully apparent from the following description of the drawing, illustrating a presently preferred embodiment thereof, and wherein: y'

Figure l is a fragmentary plan view showing a portion'of a rim and tire'as said parts will appear when in a horizontal position and Withthe tire removing tool shown partly in section and partly in elevation applied thereto; f

Figure 2 is a view taken at right angles to Figure 1 with the tire removed and rvshowing a portion of the rim asit would appear in an up-v right or vertical position and showing the tool in top plan and as it Will appear when applied to the rim;

Figure is a cross sectional view' taken substantially along a plane as indicated by the line 3 3 of Figure 1; v

Figure 4 is a cross sectional view taken substantially along a plane as indicated by the line 4-4 of Figure 2, and

Figure 5 is a fragmentary side elevational view, partly in section showing a modification of the tool.

Referring more specically to the drawing, an rst with reference to the form of the invention as illustrated in Figures 1 to 4, for the purpose of illustrating a preferred application and 'use of the tire removing tool, designated generally 6 and comprising the invention, a portion of aconventional tire rim is illustrated in the drawing and designated generally 1 and a portion of a pneumatic tire 8 is illustrated in Figure 1 and is shown applied to the rim 1; said 'tire containing the usual inner tube, is indicated at`9. The rim s Claims. (crime-1.22)

2 'I is of the type commonly used on large trucks and wherein the exterior surface III thereofis bound on one edge by an upwardly and outwardly curved annular nange II ,forming an integral part vof said rim 'I while the opposite edge of the rim is provided with an annular outwardly opening locking ring receiving groove- I2. v The tire removing tool 6 includes a body member, designated generally I3, formed of a metal casting having a head portion` I4 provided with an outer end I5 forming an impact receiving surface. The body member or casting I3 is preferably split at the opposite end of the head I4 to provide one arm I6 which extends from the inner end I1 of thehead I4 to providea rim engaging guide which is longitudinally bowed, as seen in Figure 1, to conform to the contour of the grooved edge I2 of the rim 1.' Said guide member I6 terminates at its opposite, free end yin an inwardly extending grooved portion I8 the inwardly .opening notch or groove I9 of which is adapted to receive the grooved edge I2rof `the rim 1, as best illustrated in Figure 4, so that inwardly extending portion I8 straddles ythe edge I2 `of the rim. A second arm of the-body member or casting I3 extends from they inner end I1 of the impact receiving head I4 and is curved away from the guide member I 6 to provide a handle 20 which is disposed substantially perpendicular to ythe guide member IB and which terminates at' its free end in a restricted laterally ofls'etextension 2| which is adapted to be used for removing a split locking ring, not shown, from the ring groove I2. While the handle 20 has been illustrated las `being formed integral with the head I4 and guide member I6, it may be welded, forged or otherwise secured thereto. `2

A blade 22 has one end thereof disposed on the outer or upper side of the guide I6, which constitutes the convex side thereof, and said end of the blade 22 is secured to the guide I6 in any suitable manner as by welding, as seen at 23. The blade 22 projects transversely from the guide member I6 and is disposed in a plane substantially parallel t0 the handle 20 and projects from the guide member I6 in the opposite direction to said handle 20, The blade 22 is provided with one longitudinal edge which is beveled on its outer or upper side to form a cutting edge 24 and Whichconstitutes the leading edge of said blade when the tool is in operation, as willhereinafter be described. The other, trailing edge of the blade 22 preferably converges outwardly towardl the free end of the cutting edge 24, as seen at 25 in Figure 2. The outer end of the blade 22 is substantially straight as seen at 28 and is disposed substantially at a right angle to the cutting edge 24.

Assuming that the rim 'I has been removed from the wheel, not shown, and has been laid on a supporting surface in a horizontal position, as illustrated in Figure 1 and with the grooved edge I2 thereof uppermost, after the locking ring, not shown, has been removed from the ring groove I2 and the removable rim flange, not

shown, has likewise been removed, the tool 6 isV grasped by the handle 20 and the blade 22 is then forced transversely between the outer surface II) of the rim and the inner portion of the tire 8 and tube 9 with the outer end 2B of the blade advancing toward the flange I I as the leading end of the tool 6. This may be accomplished by tapping the tool 6 with a hammer or other impact tool for forcing the blade 22 between the tire and rim. When the tool 6 is fully applied in this manner the guide member I6 will be disposed against the grooved edge I2 of the rim 'I and with its lateral extension I8 straddling a portion of said grooved edge, as illustrated in Figure 4. and the blade 22 will have its outer end 26 disposed adjacent the inner surface of the stationary flange I I. The blade is preferably bowed slightly in a direction transversely of its longitudinal axis, as illustrated in Figure 1, so that the concave or under side of said blade will rest substantially iiush against a portion of the outer surface I of the rim 1. By then holding the tool 6 with one hand by the handle 20 and strik- Iing the surface I of the head I4 with a hammer or other suitable impact tool, not shown, the tool 8 may be driven by a succession of impact strokes in a direction from right to left of Figures 1 and 2 for causing said tool to travel completely around the rim 1. As the tool 6 moves around the rim I the blade edge 24 will cut or force the tire and tube away from the rim surface I0 and as said edge 24 is disposed against the rim surface I I! it will not cut into the tire or tube but instead will eut any rust or corrosion from the rim surface I0 so as to clean said surface as the tire and tube are disengaged therefrom. After the tool 6 has completed the complete circle of the rim I it may be withdrawn from between the rim and tire by an outward pull on the handle and the tire and inner tube may then be very readily removed from the rim 1.

lFigure 5 illustrates a slightly modified form of the invention wherein the tire removing tool is modified only to the extent that a sleeve member 21 has one end thereof disposed on the outer end of the tool head 54a and secured thereto as by welding, as seen at 28. The opposite end of the sleeve 21 combines with the impact receiving surface I5a of the head I4a to form a socket for receiving a power hammer, not shown, a portion of which may be interlocked with the sleeve 21 by internally disposed spaced locking ribs 29 of said sleeve.

Various other modications and changes are likewise contemplated and may obviously be resorted to, without departing from the spirit or scope of the invention as hereinafter defined by the appended claims.

I claim as my invention:

1. A tool for disengaging a pneumatic tire from a rim comprising a head having an outer impact receiving end and an opposite, inner end, a guide member rigidly secured to and extending from a portion of the inner end of said head and adapted to slidably engage an edge of a tire rim, said guide member forming a substantially straight extension of the inner end of the head, a handle projecting from another portion of the inner end of said head and rigidly secured thereto, a blade having one end secured to the guide member adjacent said handle and projecting transversely therefrom and adapted to be inserted transversely between the outer side of said rim and a tire mounted thereon, said blade having a straight scraping and cutting edge extending from endto-end thereof disposed remote to said head and transversely of the guide member, said blade and handle projecting in opposite directions from the guide member and being disposed in substantially parallel planes.

2. A tool for disengaging a pneumatic tire from receiving end and an opposite, inner end, a guide member extending from a portion of the inner end of said head and adapted to slidably engage an edge of a tire rim, a. handle projecting from another portionof the inner end of said head, a blade having one end secured to the guide member and projecting transversely therefrom and adapted to be inserted transversely between the outer side of said rim and a tire mounted thereon, said blade having a scraping and cutting edge extending from end-to-end thereof and disposed remote to said head, said blade and handle projecting in opposite directions from the guide member and being disposed in substantially parallel planes, said guide member having a laterally projecting bifurcated portion at its free end extending therefrom in the same direction as said blade for straddling an edge of the rim.

3. A tool for disengaging a pneumatic tire from a rim comprising a head having an outer impact receiving end and an opposite, inner end, a guide member extending from a portion of the inner end of said head and adapted to slidably engage an edge of a tire rim, a handle projecting from another portion of the inner end of said head, a blade having one end secured to the guide member and projecting transversely therefrom and adapted to be inserted transversely between the outer side of said rim and a tire mounted thereon. said blade having a scraping and cutting edge extending from end-to-end thereof and disposed remote to said head, said blade and handle projecting in opposite directions from the guide member and being disposed in substantially parallel planes, said head being curved outwardly in a direction away from the edge of the rim engaged by said guide member.

4. A tool for disengaging a pneumatic tire from a rim comprising a head having an outer impact receiving end and an opposite, inner end, a guide member extending from a portion of the inner end of said head and adapted to slidably engage an edge of a tire rim, a handle projecting from another portion of the inner end of said head. a blade having one end secured to the guide member and projecting transversely therefrom and adapted to be inserted transversely between the outer side of said rim and a tire mounted thereon, said blade having a scraping and cutting edge extending from end-to-end thereof and disposed remote to said head, said blade and handle pro.- jecting in opposite directions from the guide member and being disposed in substantially parallel planes, said guide member being bowed longitudinally to conform to the curvature of the edge of the rim engaged thereby, and said guide member having a bifurcated laterally projecting extension at its free end including inner and outer furcations for engaging portions of the inner and outer sides, respectively, of the rim.

5. A tool for disengaging a pneumatic tire from a rim comprising a head having an outer impact receiving end and an opposite, inner end, a guide member extending from a portion of the inner end of said head and adapted to slidably engage an edge of a tire rim, a handle projecting from another portion of the inner end of said head, a blade having one end secured to the guide member and projecting transversely therefrom and adapted to be inserted transversely between the outer side of said rim and a tire mounted thereon, said blade having a scraping and cutting edge extending from end-to-end thereof and disposed remote to said head, said blade and handle projecting in opposite directions from the guide member and being disposed in substantially parallel planes, and a power hammer receiving sleeve secured to said head and projecting from the impact receiving end thereof and combining therewith to form a power hammer receiving socket.

6. A tool for disengaging a pneumatic tire from a rim comprising a head having an outer impact receiving end and an opposite, inner end, a guide member extending from a portion of the inner end of said head and adapted to slidably engage an edge of a tire rim, a handle projecting from another portion of the inner end of said head, a blade having one end secured to the guide mem- Cil 6 ber and projecting transversely therefrom and adapted to be inserted transversely between the outer side oi said rim and a tire mounted thereon, said blade having a scraping and cutting edge extending from end-to-end thereof and disposed remote to said head, said blade and handle projecting in opposite directions fromy the guide member and being disposed in substantially parallel planes, and a power hammer receiving sleeve secured to said head and projecting from the impact receiving end thereof and combining therewith to form a power hammer receiving socket, said socket having internally disposed spaced locking ribs.

JAMES M. EDWARDS.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 221,163 England Nov. 4, 1879 1,192,200 Howard July 25, 1916 1,385,948 Norlund July 26, 1921 1,444,226 Wallace Feb. 6, 1923 1,568,111 Vdos Jan. 5, 1926 1,616,362 Gagnon Feb. 1, 1927 1,741,801 White Dec. 31, 1929 

